Just went through the wringer with my 2002 f350 7.3 PD truck. It all started when the engine light came on. Next, the truck became VERY sluggish and sounded like it was going to roll over and die. Black smoke bellowed from the pipe and I was ready to say my good-bye's to an old friend.
I called every diesal mechanic I could find and googled until my fingers bled trying to locate the problem my truck was having. I heard everything from bad gas to bad fuel pump, bad injectors, bad sensors (ICP & ICR) bad egr valve, bad this, bad that. MONEY MONEY AND MORE MONEY!! Determined to fix the problem myself, I pulled all the sensors and cleaned them, bought a code reader (Which said no dtc's were detected) changed all the filters, etc. Stil the truck coughed, shook, and sputtered like it had the swine flu. While the truck was running, I decided to check wires and vacuum hoses. When I reached below the turbo tubes and pressed on the wiring harness that houses the wires for the sensors, a strange thing happened.. The truck came back to life!! All this time it was as simple as cleaning the clip then re-attaching it. Saved hundreds, if not thousands of dollars by doing this. Can't help but wonder how many others with the same problem had to fork over tons of cash to these dealers or mechanics replacing perfectly good sensors, valves, etc. Lesson learned. I took pictures along the way so if anyone is curious, I can send them'
Glad to have my baby back!!